Type-bar rest.



Patented' May 21,1918.

@TNTEd FNTMFT FFTME.

ALVAH C. ROEBU'CK, OF WOODS'IOCK, ILLINOIS, ASSIGNOR TO WOODS'I'OCK TYPEWRITER OOIVIPANY, OF'WOODSTOCK, ILLINOIS, A CORPORATION OF ILLINOIS.

'rara-Ban nns'r.

Specification of Letters Patent.-

Application filed November 7, 1914. Serial No. 870,774.

T0 all whom it may concern.'

Be it known that I, `ALLVAH C. ROEBUOK, a citizen of the United States, residing at Woodstock, in the county of McHenry and State of illinois, have invented certain new and useful Improvements in vType-Bar Rests, of which the following is a specification.

This invention relates to a typewriter and to that portion of a typewriter upon which the type bars are supported when they are at rest. l i

The principal object of this invention is to provide a type bar rest which is simple and inexpensive to manufacture and construct and in which there is the least ypossible rebound due to the'impact of the type bars as they are returned from the printing position. y

Another object is to provide a suitable cushion for the type bars by means of which the impact is reduced to las great an extent as possible so that there is no tendency to rebound and in order to prevent the collision and locking of the type bars at the type end.

Other objects will be hereinafter set forth.

Tn the accompanying drawing, Figure 1 is a perspective view of a portionof the top plate of a typewriting machine with a curved portion in which the cushioning material of the type bar rest is seated; Fig. 2 a View in elevation showing the type bar rest in section. Fig. 3 is a sectional view taken on the line 8-3 of Fig. 2. Fig. i is a top view of the cushioning material. Fig..5 is a side elevation of the cushioning material.

lin a type bar rest, the principal `object is to prevent rebound of the type bars, `and another object is to provide a construction which is as nearly silent as possible in action. In some constructions, the cushioning material is attached to a strap of sheet metal which is supported on the frame of the machine, while others use various constructions and combinations to deaden-the sound, to diminish the impact and to prevent the rebound.

ln the present construction, the cushioning material is disposed directly upon an integral curved portion 6 of the top frame 7 which extends in front of the machine, preferably in the form of a crescent of which about half is shown in Fig. 1. This curved pcrtion 6 is formed with a dang@ B behind which is a groove 9 and an inclined portion 10 in which is a recess 11 with small grooves 12 in the bottom. Seated in the recess 11 which extends substantially the full length of the curvedportion 6, is the cushioning material upon which the type bars directly rest. This cushioning material consists of a piece of felt 13 covered by a strip of what is known to the trade as light weight both sides ooze calf-skin, usually known to the public as suede, or chamois-skin, designated generally by the reference numeral 14:, both of these leathers having the outer or hair side of the skin removed, so as to give it a rough surface and make it softer and less resilient. The small grooves 12 in the bottom of the recess 11` are for containing adhesive substance such as glue, for holding the felt in place. The felt is secured to the leather by stitching or by adhesive material, or by both, and the ends of the leather strip 1i extend beyond the felt and are secured to the frame 7 by fastening devices 15. lit is found that chamois, suede, or an undressed leather of this kind, is particularly adapted for use in this connection for the reason that it is almost entirely without resilience, while a finished `leather has a tendency to produce a rebound. By further cushioning this chamois or suede with felt, the rebound of the type bars is almost entirely prevented and the supporting frame being firm and unyielding, practically eliminates the noise. While a single strip of felt under the leather is considered preferable, it is obvious that sevelral strips of felt orother fabric may be use Each of the fastening devices 15 preferably comprises a nut 16, a bolt with a round head 17 cut away on yone side 18, and of a size to t in a recess 1,9 in which the end of the leather strip 14 is seated, so that when the nut is tightened on the bolt, the end of the leather strip 14 is completely hidden, thus presenting a neat and finished appearance.

What lf claim is:

1. In a typewriting machine, a single piece frame plate extending over the top of the machine from front to rear and formed at the front with an integral type bar rest curved downwardly at the center and with an upwardly opening groove in the curved portion, and a noneresilient pad Secured in the groove.

2. A type bar rest curved downwardly at the center kwith an upwardly opening longivttudinal recess ,in the Y,curved portion and grooves in the `bottom thereof for V'coi'itaining adhesive material, and an anti-rebound cushion disposed in the recess and heldl in'place by adhesive material. i l

'3l In a typewriting' machine, a top frame plate formed at the 'front with" a portion curved ydownwardly at the center and hav- 'ing'an upwardly opening 'longitudinal recess with longitudinal grooves in thehottom yfor conflning adhesive', material, and ay non-resilient pad secured in the groove.

z 4. In a front strike typewriting machine,

` a, type bar rest'consisting of a frame plate with an integral curved portion concavely .curved from the horizontal 1n which 1s an 3vupwardly opening longitudinal recess with 'p a'plurality of grooves lin the bottom for containing adhesive material and anA` anti-rebound cushion disposed in the recess "and held in place by adhesive material.

5. In a front strike typewriting machine, a type bar rest consisting of a frame plate formed with a concavely curved portion in which is a longitudinally extending upwardly openingl recess with a plurality of vthe vtop o'f the plate, non-resilient material secured to the top of the curved portion, an oozeleather stripl secured to the non-resilient material and over-lapping itat the ends, and means for securing the over-lapping ends of the ooze leather to the curved portion of the Jframe. l v

7. In a front strike typewriting machine, a type bar rest'consisting'of a top frame plate with a curvedv portion formed integral therewith at the front in which is an upwardly opening concave longitudinally eX- tending recess with a plurality of grooves s in the bottom, a strip of felt disposed in the recess, adhesive material in the grooves for holding the felt in place, a stripV of ooze leather connection with the felt and overlapping it atthe ends, and fasteningdevices for securing the overlapping ends to the y frame plate.

` 8. A type bar rest curved downwardly `at the' center Vwith an 'upwardly' opening longi- V tudinally grooved recess, a non-resilient pad for the recess, adhesive materlal 1n the grooves for holding the pad in the recess, and additional holding means for the pad 'at' the 'ends' of the recess 9. In a type bar rest, the combination with a Jframe element, having recesses at 'the "sides, of an anti-rebound cushion supported thereby with the ends thereof disposed in the recesses, and a'fastening deviceco1nprising a boltv with abroad iiathead adapted to be `insertedthrough the end ofthe cushion and'tli'roughthe framefthe headsubstantially lling the recess and covering the end of the cushion, and means to bind the bolt 'fand' cushion inplace.

10.'A type barrest comprising a 'frame plate formed with a longitudinal groovcd recess and with other recesses at the end of'the grooved recess, of an anti-rebound cushion disposed in the grooved recess hav- "ing its ends in the other recesses, means to hold the cushion in the grooved recess, and abolt with a head adapted to fill' the recess and to hide and bind the end of the cushion therein.

11. In a front strike typewriting machine,

the combinationwith a top frame plate formed at the front with a portion curved 'from the' horizontal in af vertical 'plane and 'less 'than' a' semi-circle 1n extent havmg an upwardly opening recess with longitudinally extending grooves therein,'of a non-resilient padconsisting of a strip of felt'and a longer strip of leather secured thereto, adhesive vmaterial"disposed in the grooves in the bottom of said recess to fasten the felt of the pad, and fastening means yconsisting of fiat "headed bolts fonsecuring the leather projecting ends to the platev at the ends of the curved. portion. l

`In "testimony whereof I have signed my name to this specification, in the presence of two subscribing' witnesses, on this 4th day of November, A. D. 1914.

ALvAH c. RoEBUcK.

`Witnessesz L. E. HoUsHoLDnR, D. C. Anims.

Copies of this patent may be obtained for vef'cents" each,'fby` addressingl the' Commissioner of Iatents,

Washington, D. C. 

